Effects of electron-transfer chemical modification on the electrical characteristics of graphene

Xiao Yan Fan, Ryo Nouchi, Li Chang Yin, Katsumi Tanigaki

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Because of the large reactivity of single layer graphene to electron-transfer chemistries, 4-nitrobenzene diazonium tetrafluoroborate is employed to modify the electrical properties of graphene field-effect transistors. After modification, the transfer characteristics of chemically modified graphene show a reduction in the minimum conductivity, electron-hole mobility asymmetry, a decrease in the electron/hole mobility, and a positive shift of the charge neutrality point with broadening of the minimum conductivity region. These phenomena are attributed to a dediazoniation reaction and the adsorbates on the graphene surface.

Original languageEnglish
Article number475208
JournalNanotechnology
Volume21
Issue number47
DOIs
Publication statusPublished - 2010 Nov 26

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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